Machine for cutting fabrics.



No. 860,530. 'PATENTED JULY 16, 1907.

W. GORMANY, MACHINE FOR-CUTTING FABRICS.

APPLICATION FILED JULY 7., 1908.

2 SHEETS-SHEET 1.

No. 860,530. PATENTED JULY 16, 1907. WfOORMANY. MACHINE FOR CUTTINGFABRICS.

APPLIOATIOH FILED JULY '1. 1908. l

' 2 BHEETSBEBE T 2Q PATENT oFFIoE.

WALTER OORMANY,

OF NEW YORK, N. Y.

MACHINE FOR CUTTING FABRICS.

No. 860,530. Specification of Letters Patent. Patented July 16, 1907.

Application filed July 7,1906. Serial No. 325,069.

To all whom it may concern:

Be it known that I, WALTER CORMANY, a citizen of the United States,residing at New York city, borough of the Bronx, county and State of NewYork, have invented certain new and useful Improvements in Machines forCutting Fabrics, of which the following is a clear, full,'and exactdescription.

This invention relates to machines for cutting fabrics, one of theobjects being to provide a positive cutting element of special design.

A further object of the invention is to provide certain improvedautomatic sharpening means for the cutting element.

The cutting element of my improved machine comprisesa series ofindependent lineal cutting divisions, the said cutting divisions beingof special shape.

()ne of the principal features of my invention is the form and action ofthese lineal cutting divisions, which are ground or beveled upon bothsides starting from a. point intermediate the edges of the bladecontaining these cutting divisions and meeting midway between the sidesof the said blade, thus producing a cutting blade of an acute angularshape. It is due to this shape that I am enabled to keep the cuttingblade in line or straight. I have found that if the said blade wereground or beveled upon one side only, or triangular, the action of thebeveled side would lead the bladejout of line in machines of thischaracter.

Another feature of my specially constructed blade or band is that owingto the notches therein the cutting surfaces sever the fabric rnoreeasily, as when the said notches pass through the pile they tend todrive or compress the fabric toward the table of the machine, and hence,while there is a constant cutting action going on, there is also anaction upon the part of the said notches to hold the pile of fabricdown.

In order to sever the fabric clean, it is necessary to keep the cuttingelement perfectly sharp, and to attain this end and to obviate thenecessity of taking the cutting-blade or band from the machine for such'purpose, I have devised an automatic sharpening means which I attach tothe machine convenient to the cutting-blade, or band, as will behereinafter described.

To these and other ends which will hereinafter appear my inventioncomprises the novel features of improvement and combination andarrangement of parts which I will now proceed to describe and finallyclaim, reference being had to the accompanying drawings, forming part ofthis specification, wherein Figure 1 is a side elevation of a machineembodying my improvements; Fig. 2 is an enlarged partial plan view ofthe sharpening device and shows the grinding elements in contact withthe cutting-band; Fig. 3 is an enlarged detail view of one of thesliding heads which carries one of the grinding elements, the supportingplate being shown in section, the section being taken on a line aa inFig. 2; Fig. 4 is an enlarged side elevation of a fragment of thecutting-band; Fig. 5 is a cross-section thereof, the section being takenon a line dzl in Fig. 4; and Fig. 6 is an enlarged detail view of aportion of the supporting-plate for/the sliding-heads, the heads beingremoved.

Similar letters or numerals of reference are intended to indicatecorresponding parts in the several views.

Referring now to Fig. 1, the numerall indicates the supporting-frame ofmy improved machine. Upon the top of the frame a band-wheel 2 isrotatably supported in a sliding box 3 which is fitted to the guides 4,4 and operated by the adjusting-screw 5 and handwheel 6. At the bottomof the frame a second bandwheel 7 is rotatably mounted. The band-wheel 7constitutes the secondary driving-element for the flexible cutting-band8. The wheel 7 is driven by means of a pulley 9 at the opposite side ofthe frame 1, which pulley in turn is driven by a belt 10 that connectswith any suitable driving element (not shown). It will be seen that theband 8 is continuous and, as the wheels 2 and 7 are revolved, willtravel at a high rate of speed, in the manner of a band-saw, thedirection of travel being in the direction of the arrow B. When inoperation a pile of fabric G will be placed upon the table 11 of themachine and fed against the band 8 in a manner well known in the arts.

By referring to Fig. 4 it will be seen that the band 8 is notched as at8, thereby leaving independent lineal cutting surfaces 8 and byreferring to Fig. 5 it will be seen that the said band is beveled atboth sides, as at 12 and 13, said bevels meeting at the aforesaid point8'', all of which are for the purpose hereinbefore stated. In order tokeep the lineal cutting edge 8 up to the requisite degree of sharpness,I provide a plurality of rotary grinding elements 14 and 15 (Fig. 2)which are designed to contact the band 8 at the beveled portions 12 and13, as shown. The grinding elements may be disks of emery or the like,and are suitably attached to spindles 14 and 15, which in turn arerotatably mounted in bearings 16 and 17, respectively, of thesliding-heads 18 and 19. Said sliding-heads 18 .and 19 are mounted inguideways 20, 21, respectively, and are adapted for adjustment alongsaid guideways or in parallelism with the sides of the band 8, by meansof the adjustingscrews 22, 23, which are suitably mounted for the purpose, as shown in Fig. 3. The guides 20, 21 have'extending therefromslides 24 and 25, which are in turn carried by guides 26 and 27, theguides 20, 21 and slides 24 and 25 being in this instance integral. Theslides 24, 25 are adapted for adjustment transversely of the band 8 inthe guides 26 and 27 by means of thescrews 28 and 29. The guides 26 and27 are carried by a bracket-plate 30 which is attached to the frame 1,in

this instance, by screws 31 (Fig 1). By the aforesaid means oftransverse and parallel adjuiment of the grinding elements I am enabledto graduate the grinding to the belt-wheel 35, which is carried by theshaft 36 of the head 19. The shaft 36 corresponds to ihe shaft 37 of thehead 18 and carries a bevel-pinion, similar to the pinion 38 of theshaft 37. Th. spindle 15 carries a bevel-gear similar to the bevel-gear39 of the spindle '14, all of which are arranged in a fork 40 similar tothe fork 40 of the head 18, the said pinion and gear being in mesh. Uponthe inner end of the shaft 36 a spurpinion 41 is placed, which mesheswith an idle spurgear 42, which in turn drives a spur-gear 43 carried bythe shaft 37. It is therefore obvious that the disks 14 and 15 aresimultaneously operated through the said train of gears, the said gearsbeing operated by the main shaft by means of the belt 32 and wheels 33and 35. As shown in Fig. 6 the idle-gear 42 is adapted to be carried cutof mesh with the pinion 41 and gear 43. The gear 42 is carried by aslidable box 44 which works in guides 45 formed in the plate 30, anadjusting-screw 46 being supplied for the purpose, said screw workingwithin the hub 47 upon the plate 30. By this means I am able to throwthe disk 14 out of operation and grind one side only of the band 8 bymeans of the disk 15.

My improved machine as hereinabove described is adapted to cut a pile offabric to a pattern and is pargrinding elements, whereby one grindingelement ticularly adapted for cutting piles of thin fabric, which hasheretofore been difficult of accomplishment by machine.

Instead of employing belt-driven grinding elements, such as shown anddescribed, I may substitute a sprocket-chain or connect thegrinding-elements with a geared counter-shaft.

Having now described my invention, what I claim and desire to secure byLetters Patent is:

1. In a machine for cutting fabrics, the combination of a continuousmetal band having a cutting edge, means for operating same, a rotarygrinding element on each side of said edge adapted to contact same,means for independently adjusting said grinding elements, a gear carriedby each of said grinding elements, an idle gear in mesh with the gearscarried by said grinding elements said idle gear being slidably mounted,means adapted to throw said idle gear out of mesh with the gears carriedby said only Will operate, and means for driving one of said grindingelements, said idle gear being adapted to drive the other grindingelement.

2. ,The combination of a traveling cutting band provided with aplurality of independent spaced lineal cutting edges in alinement, saidcutting edges being separated by acute angular serrations, whereby acompressing edge is formed at the meeting points of said cutting edgesand the sides of said angular serrations, a plurality of adjustablerotatable sharpening elements, carried by rotatable spindles, adapted tosharpen said cutting edges, gears carried by said spindles, anadjustable idle gear in mesh with the gears carried by said spindles,means adapted to bring said idle gear in and out of mesh with the gearsupon said spindles, and means for connecting one of said spindles with adriving element.

WALTER CORMANY.

Witnesses EDWARD A. JARVIS, LILLIAN HAnnis.

